TY JOUR TI CALCULATION OF CONTROLLED TIGHTENING EFFORT IN GROUP BOLTED JOINT KW bolt KW flange KW tightening effort KW bolted joint KW factor KW basic loading KW finite element method (FEM) KW joint-disclosure JO Bulletin of Bryansk state technical university AU Guchinskiy, R.V. PY 2020 IS 2020 PB Bryansk State Technical University